<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="test">
        <ul>
            <li id="a">企业版</li>
            <li>高校版</li>
            <li>私有云</li>
        </ul>
        <input type="password" id="mima" >
    </div>
    <script src="./jQuery.js"></script>
    <script>
        let a=$('#test li');
        a.css('background-color','#ffd351').css('color', 'red');
    //    let li=$('ul');
    //    li.append('<li>master</li>')
        //创建dom对象
        // let ps=document.createElement('li');
        // ps.innerHTML='<li>我是新增的DOM元素</li>'
        // //添加DOM对象
        // let ul=$('ul');
        // ul.append(ps);
    let ul=$('ul');
    let ps=document.createElement('li');
    ps.innerHTML='我是转化后新增的dom对象'
    
    console.log(ul.append($('#li')));

    </script>
</body>
</html>